220 8248 <8045a4d2-721d-4725-8bb7-7a91b6f53ec8@isocpp.org> article Path: news.gmane.org!not-for-mail From: abolz.lists@gmail.com Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: string_view::is_null() Date: Fri, 27 Dec 2013 04:52:12 -0800 (PST) Lines: 48 Approved: news@gmane.org Message-ID: <8045a4d2-721d-4725-8bb7-7a91b6f53ec8@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_5003_473001.1388148732176" X-Trace: ger.gmane.org 1388148732 24271 80.91.229.3 (27 Dec 2013 12:52:12 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 27 Dec 2013 12:52:12 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCAJPLFFWYPBB7PP6WKQKGQEFFBJ7HY@isocpp.org Fri Dec 27 13:52:18 2013 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-qc0-f197.google.com ([209.85.216.197]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1VwWtm-0003QN-Q9 for gclcip-std-proposals@m.gmane.org; Fri, 27 Dec 2013 13:52:18 +0100 Original-Received: by mail-qc0-f197.google.com with SMTP id r5sf10621674qcx.0 for ; Fri, 27 Dec 2013 04:52:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:message-id:subject:mime-version:x-original-sender :reply-to:precedence:mailing-list:list-id:list-post:list-help :list-archive:list-subscribe:list-unsubscribe:content-type; bh=1nuZmWz5FkJsG5lQqwPl9refx8y09GG5k6HlCpCC7tg=; b=K3kpNfrfuAWDNWHC9+VyMBfqGif58yWJoI6KuevDKY108Cml6lqIqWToWHTAM7WMhT kuioDq/IUV4OzjVqyD3Xb7GINO2HKMEvPJzgcqdCMW6dF0O1rpb/+tgUd/RLRaDaTRma nZv4UnvKhMDSpeLYUwccn+ob6Bc3CyhJSMuDF6A5TU7i9IEIm4zzqwYDVVTt4pRIrJvW 9DKklsNaxxGLlRJhVYO2FXTxNba24WqvFjU/Z5J1pnHd2mlGhUXrbRCG36XzFo4pE/tV rrJnEvuLCqzMfdgnUwZHBWVUOvaOOPdE3RPP5yOq9abKWQYX/CAWSzSIJmfuYMnIJA/l AQ2Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:message-id:subject:mime-version :x-original-sender:reply-to:precedence:mailing-list:list-id :list-post:list-help:list-archive:list-subscribe:list-unsubscribe :content-type; bh=1nuZmWz5FkJsG5lQqwPl9refx8y09GG5k6HlCpCC7tg=; b=al/5jp73ZhGA1S35c61Nj2MCZJx5JhUeHLs2/iZkTKqtUoENUsnfOVZBn3FFBBhXUJ gstNzrza3HPR7ZjoISAXexW6WCzSAsqlATOBEB2gw76F13o6FK+vwbcVlPje58MxKU/O +8LkPhutd0JCVn8JLQ41vIYyTdqTQQGL4njuAeFzSpV0Qa2Dy0LYdhnhWS4G7tl8mwRC fw3/P4kxBVMtdvBDIOjD3SVhlohsALpbrZ4kRolfN4M1aA0Qj+ZBJt6LtIb4fpf2J7Wh h7/TfV92YeAx1qGG9pEhxazyCVQPubq2E7IvLx02u9xJrWNnLYkF7piOOmSSa6M3PO9n hifg== X-Gm-Message-State: ALoCoQlLqMfV8nJuhYQGEsK1X08e6U18lbzq6AP2g2r8JP9jB5TNu3tnlAEi4deTnvrFDTZZksoH X-Received: by 10.58.145.233 with SMTP id sx9mr13529809veb.0.1388148733538; Fri, 27 Dec 2013 04:52:13 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.49.104.40 with SMTP id gb8ls2819108qeb.27.gmail; Fri, 27 Dec 2013 04:52:12 -0800 (PST) X-Received: by 10.49.94.144 with SMTP id dc16mr13627qeb.21.1388148732857; Fri, 27 Dec 2013 04:52:12 -0800 (PST) X-Original-Sender: abolzlists@gmail.com Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:8248 Archived-At: ------=_Part_5003_473001.1388148732176 Content-Type: text/plain; charset=ISO-8859-1 Is there a reason why string_view is not nullable? Nullable here means default constructed or constructed from a nullptr (and a zero length). Then adding a is_null() (or null()) member function which can then be used to distinguish the string_view from an empty string. This should not affect data() which returns a non-null pointer. -- --- You received this message because you are subscribed to the Google Groups "ISO C++ Standard - Future Proposals" group. To unsubscribe from this group and stop receiving emails from it, send an email to std-proposals+unsubscribe@isocpp.org. To post to this group, send email to std-proposals@isocpp.org. Visit this group at http://groups.google.com/a/isocpp.org/group/std-proposals/. ------=_Part_5003_473001.1388148732176 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable

Is there a reason why string_view is not nullable?

<= div>Nullable here means default constructed or constructed from a null= ptr
(and a zero length). Then adding a is_null() (or null()) memb= er
function which can then be used to distinguish the string_view= from an
empty string.

This should not aff= ect data() which returns a non-null pointer.

--
 
---
You received this message because you are subscribed to the Google Groups &= quot;ISO C++ Standard - Future Proposals" group.
To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposals+unsubscribe@isocpp.org.
To post to this group, send email to std-proposals@isocpp.org.
Visit this group at http://groups.google.com/a/isocpp.org/group/std-proposals/<= /a>.
------=_Part_5003_473001.1388148732176-- .